Deadzone - Maps & Satellite AI

Topographic maps & tools that work with no signal. NOTE: Satellite SMS feature is used outside of this app via Messages. This companion app is for using and downloading maps and tools for offline use, as well as using the Ask Deadzone AI assistant with internet. Deadzone supports off-roaders, backcountry hikers, campers, hunters and any adventurer. Download a North American topographic basemap with 10-meter contours, 21 map overlays, 20 tools, 94,000 named summits, light and OLED-black "Night Ops" themes, and navigate offline once you're out of service. MAP DATA Layer the data that matters, every feature tappable for detail: - Motorized routes: USFS Motor Vehicle Use Maps, Forest Service roads & trails, BLM travel-management routes - Public lands: ownership and jurisdiction (PAD-US), designated wilderness, National Park trails - Water: rivers and lakes, coastal and inland depth contours, live tides and river gauges - Hazards: active wildfire perimeters, cell-coverage dead zones - Trails: OpenStreetMap and state OHV systems - And much more TERRAIN TOOLS Tools that compute against real elevation data, on-device and offline: - Route profile — elevation gain and loss along any route - Viewshed — everything visible from a point - Sight line — whether you have a clear view between two points - Radio line-of-sight — whether two stations can reach each other over the terrain - Sun & shade — where shadows fall at any date and time - Plus wind, area and distance measurement, coordinate conversion, and geofence alerts - And more ASK DEADZONE An AI assistant tuned for the outdoors. Ask about weather, trail conditions, water sources, or gear, and get answers grounded in live data from the NWS, USGS, the National Park Service, and more, not guesswork. Tap any map feature to ask a follow-up question about that exact spot. PLAN AND RECORD Build multi-day trips with waypoints, import and export GPX, get a briefing the evening before you leave, and record your track on the trail. FIELD REFERENCE Wilderness first-aid protocols, written for fast reading when it counts. PART OF THE DEADZONE PLATFORM Deadzone also bridges satellite SMS to the same AI — text questions from anywhere with no cell service (T-Mobile T-Satellite, Garmin inReach, and compatible devices). The app is your planning and navigation companion to that service. — — — Deadzone requires an account; create one and choose a plan at getdeadzone.io. Plans start at $5.99/month and include full offline maps and every overlay. Maps, tools, and field references are for informational planning only and are not a substitute for professional judgment, official sources, or emergency services. Deadzone is not an emergency service; in a life-threatening situation, contact 911 or a satellite SOS / personal locator beacon. © 2026 Obsidian Design, LLC